3Com S7906E Configuration Manual page 2351

include: Displays only the lines that match the regular expression.
A regular expression is a case sensitive string of 1 to 256 characters. It also supports special characters
as shown in Table 1-5.
Table 1-5 Special characters in a regular expression
Character
^string
string$
.
*
+
|
_
-
[ ]
( )
Meaning
Starting sign, string appears
only at the beginning of a line.
Ending sign, string appears only
at the end of a line.
Full stop, a wildcard used in
place of any character,
including single character,
special character and blank.
Asterisk, used to match a
character or character group
before it zero or multiple times.
Addition, used to match a
character or character group
one or multiple times before it
Vertical bar, used to match the
whole string on the left or right
of it
Underline. If it is at the
beginning or the end of a
regular expression, it equals ^
or $; in other cases, it equals
comma, space, round bracket,
or curly bracket.
Hyphen. It connects two values
(the smaller one before it and
the bigger one after it) to
indicate a range together with
[ ].
A range of characters, Matches
any character in the specified
range.
A character group. It is usually
used with "+" or "*".
1-22
Remarks
For example, regular expression "^user"
only matches a string beginning with
"user", not "Auser".
For example, regular expression "user$"
only matches a string ending with "user",
not "userA".
For example, ".l" can match "vlan" or
"mpls".
For example, "zo*" can match "z" and
"zoo"; (zo)* can match "zo" and "zozo".
For example, "zo+" can match "zo" and
"zoo", but not "z".
For example, "def|int" can only match a
character string containing "def" or "int".
For example, "a_b" can match "a b" or
"a(b"; "_ab" can only match a line
starting with "ab"; "ab_" can only match a
line ending with "ab".
For example, "1-9" means numbers from
1 to 9 (inclusive); "a-h" means from a to h
(inclusive).
For example, [16A] can match a string
containing any character among 1, 6,
and A; [1-36A] can match a string
containing any character among 1, 2, 3,
6, and A (with - being a hyphen).
"]" can be matched only when it is put at
the beginning of [ ] if it is used as a
common character in [ ], for example
[ ]string]. There is no such limit on "[".
For example, (123A) means a character
group "123A"; "408(12)+" can match
40812 or 408121212. But it cannot
match 408.